update Avalonia Sample Avalonia versions

Author: WeihanLi

AvaloniaSamples/GetStarted/GetStarted.csproj

@@ -7,15 +7,16 @@
     <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    <AvaloniaVersion>11.3.1</AvaloniaVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="11.2.7" />
-    <PackageReference Include="Avalonia.Desktop" Version="11.2.7" />
-    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.2.7" />
-    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.2.7" />
+    <PackageReference Include="Avalonia" Version="$(AvaloniaVersion)" />
+    <PackageReference Include="Avalonia.Desktop" Version="$(AvaloniaVersion)" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="$(AvaloniaVersion)" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="$(AvaloniaVersion)" />
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-    <PackageReference Include="Avalonia.Diagnostics" Version="11.2.7">
+    <PackageReference Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)">
       <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
       <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
     </PackageReference>